// var createError = require('http-errors');
var express = require('express');
// var path = require('path');
// var cookieParser = require('cookie-parser');
// var logger = require('morgan');

// var indexRouter = require('./routes/index');
// var usersRouter = require('./routes/users');

var app = express();

// // view engine setup
// app.set('views', path.join(__dirname, 'views'));
// app.set('view engine', 'ejs');

// app.use(logger('dev'));
// app.use(express.json());
// app.use(express.urlencoded({ extended: false }));
// app.use(cookieParser());
// app.use(express.static(path.join(__dirname, 'public')));

// app.use('/', indexRouter);
// app.use('/users', usersRouter);

app.use('/abc', (req, res, next) => {
  console.log(2)
  req.$title = 'hello'
  next()
  console.log(req.$head)
}, (req, res, next) => {
  console.log(3)
  next()
})

app.use((req, res, next) => {
  res.send('ok')
  console.log(0)
  next()
})

app.use((req, res, next) => {
  console.log(1)
  setTimeout(() => {
    req.$head = 'header'
  }, 100)
  // req.$head = 'header'
  console.log(req.$title)
  next()
})



// // catch 404 and forward to error handler
// app.use(function(req, res, next) {
//   next(createError(404));
// });

// // error handler
// app.use(function(err, req, res, next) {
//   // set locals, only providing error in development
//   res.locals.message = err.message;
//   res.locals.error = req.app.get('env') === 'development' ? err : {};

//   // render the error page
//   res.status(err.status || 500);
//   res.render('error');
// });

module.exports = app;
